Enter a digit in every area divided by horizontal/vertical/diagonal lines, so that every row/column contains each digit from 1 to N exactly once, where N is the number of digits to be filled in that row/column. If a cell is divided bu a diagonal, value of the fraction is regarded as height of the skyscrapers in that cell. Clues outside the grid indicate the number of skyscrapers that can be seen from the corresponding direction. A skyscraper block visibility of other skyscrapers with lower or equal height. (quoted from Toketa.vol 3)
November 27, 2015
Fractional Skyscrapers was invented by Robert Vollmert.